ARCHIVED REPORTS_XR0008675 CASE 1

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i ! i TABLE 1 SUMMARY OF RESULTS OF GROUNDWATER SAMPLING r BP OIL COMPANY SERVICE STATION NO 11194 2375 TRACY BOULEVARD TRACY CALIFORNIA ALISTO PROJECT NO 10-085 WELL DATE OF CASING DEPTHTO PRODUCT GROUNDWATER TPHG B T E X MTBE DO LAB ID SAMPLING) ELEVATION(a) WATER THICKNESS ELEVATION (b) (ug7A) (ugo) (ugl) (u911) (ugrf) (ogA) (ppm) MONITORING (Feet) (Feet) (Feet) (Feet) MW 3 02/15/90 2521 435 027 2106 — - - - — — — — MW 3 04/26/90 2521 473 005 20 52 — MW 3 07/12/90 2521 458 001 2064 — - - - - — - - MW 3 08/27190 2521 $15 - 2006 — - - - — — - — MW 3 111021'90 2521 520 — 2001 - - — - --- »- - --- MW 3 11/05/90 2521 5.20 - 2001 35000 850 560 1900 5600 - - SUP MW 3 0212591 2521 439 2062 91" 110 47 300 590 — - SUP MW 3 06/27/91 2521 541 000 1986 36000 210 71 690 2200 - - CHR MW 3 09125191 2621 615 042 1938 - - — — — - — MW3 12/10/91 2521 526 003 1997 - - MW-3 03/25/92 2521 420 001 2102 — MW 3 0602592 2521 652 060 1914 — MW 3 1210a92 2521 503 030 2041 — - - - — - — MW3 03h0/93 2521 429 SHEEN 2092 - - - - — — — - MW3 0611693 2521 464 SHEEN 2037 MW3 10r22193 2521 489 TRACE 2032 — - - - — - —MW-3 01/24194 01/24/94 2521 1270 1251 ND<50 NM5 ND<05 NDc05 ND<05 — — PACE MW3 OW07/94 2521 1320 — 1201 ND<50 ND<05 ND<05 ND<O5 NNO5 - - PACE MW 3 09/13194 2521 1160 — 1361 ND<50 33 ND<05 ND<05 19 »- PACE MW 3 01110195 2521 552 — 1969 240 9 4 12 38 -» -- ATI MW3 03/23195 2521 412 --- 2109 ND<50 ND<050 ND<050 ND<O50 ND<10 — 76 ATI MW3 10104/95 2521 533 - 1989 ND<50 054 ND<050 12 11 ND<50 48 ATE ac-1 (c) 10104/95 -- _ — ND<50 ND<050 ND<050 077 ND<10 ND<50 -- ATI MW-3 01104196 2521 594 008 1943 - -- -- - - — — — MW 3 03x29196 2521 668 010 1961 — - - -- »- --- — -- MW 3 07/01/96 2521 623 006 1903 - - - - — — MW3 10115196 2521 645 003 1678 — MW3 94/16/97 2521 475 0 01 2047 2300 37 ND<10 0 170 170 ND`100 43 SPL OC t {c) 04)16/97 - - - ND-SW ND<50 NDc100 ND<100 ND<100 ND<100 — SPL MW4 02)15190 2590 490 2100 1800 370 43 130 98 — — SUP MW4 04CLfy30 2590 505 — 2085 — — - — — --- — MW-4 07/12/90 2590 516 - 2074 3100 510 41 220 320 — -- SUP MW-4 06127196 2590 546 2044 — - — — — — - — MW4 11/02M 2590 551 — 2039 — - — — - — -MW-4 11/06/90 11/05190 2590 553 --- 2037 950 330 18 52 29 - - SUP MW-4 0212551 2590 473 — 2117 370 120 33 22 13 — - SUP MW-4 06!27191 2590 564 — 2026 1500 130 ND<O 5 21 18 — — CHR MW4 09/25191 2590 660 — 1930 810 70 49 12 110 - — SEQ MW-4 1211051 2590 543 — 2047 1360 100 14 62 110 - -- SEQ MW-4 03x2592 2590 489 — 2101 1400 500 40 210 320 - — SEQ MW-4 06/25/92 25 90 711 040 1909 - MW4 12/08/92 2590 539 SHEEN 2051 - - — - —MW-4 =10/93 03/10/93 2590 495 SHEEN 2095 MW 4 06'16193 2590 547 SHEEN 2043 - - - - MW4 10/22/93 2590 650 SREEN 2040 - - - - MW4 91/24104 2590 554 - 2036 6900 88 18 1JO 340 - - PACE MW4 06107/94 2590 598 1992 23000 210 30 720 1200 - 32 PACE MW-4 09113:54 2590 642 — 1948 9000 20 15 240 550 — 70 PACE OC i (c) 0911354 --- -- - — 5600 21 13 220 500 --- - PACE MW4 0911354 2590 483 - 2107 5100 86 1 280 510 612 ATI QGl (c) 0111655 -- --- - -- 2300 74 1 220 390 — - ATI MW-4 03123195 2590 472 009 2125 - — - — - — -MW-4 10104195 10104/95 2590 594 014 2007 - — - — — — — — MW 4 01104196 2590 512 — 2078 1700 27 25 36 58 25 08 — MW4 03129196 2590 497 2093 1300 76 ND<1 36 32 ND<10 24 SPL MW-4 07101196 2590 557 2033 11000 l60 49 590 936 NN100 40 SPL MW-4 101151`96 2590 577 - 2013 2100 39 ND<10 160 190 ND<100 47 SPL oc-1 (c) 1011556 — - — — 1100 22 ND<50 75 85 ND<% 47 SPL MW-4 04/16/97 2590 533 — 2057 5000 173 ND<50 775 767 131 37 SPL 0&May 97 PAGE 2